Island



UNITED STATES PATENT OFFICE.

CHAS. F, BROWN, OF WARREN, RHODE ISLAND.

. BALANCED RUDDER.

To all whom it may concern:

Be it known that I, CHARLES F. BROWN, of Warren, in the county ofBristol and State of Rhode Island, have invented a new and usefulImprovement in the Rudder Employed in Steering Ships; and other vesselsin water, and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawings, forming part of this specification, in whichFigure 1, represents a sideview of part of the stern of a vessel havingthe rudder at.- tached. Fig. 2, is a full view of the same. Fig. 3, is ahorizontal section of the. same taken in the line 00, 09, shown inFig. 1. Fig. 4, is also a horizontal section taken in the line shown inFig. 1.

Similar letters of reference indicate corresponding parts in each of theseveral figures.

My invention consists in the employment of two rudders hung at adistance apart upon the same post, on each side; each of the two beingat the same distance from the post, andwith the surfaces of the oneparallel or nearly so to the surfaces of the other.

The eifect intended to be produced by hanging the rudders at a distancefrom the post on opposite sides, is to make the pressure caused by theresistance of the water (as the vessel passes through it). on eachrudder balance that on the opposite one, and thus enable the steersmanto keep the helm in any position with facility. The posit-ion therudders occupy, though it allows them to offer the same resistance tothe vessels progress, causes them to meet with but little resistancewhen moved in steering and therefore reduces the amount of powernecessary to be applied in steering the vessel.

To enable others skilled in the art to make and use my invention I willproceed Specification of Letters Patent No. 8,142, dated June 10, 1851.

or otherwise. The rudder post is hung on I the stern post in loops oreyes a, or in any convenient way. t

The rudders may have motion communicated to them by any suitablesteering apparatus such: as is used with the common rudder. It will beunderstood by referring to Fig. 3, where the red circle denotes the pathdescribed by the edges of the rudders in turning, that as the ruddersform chords to the said circle, they will offer but little resistance tothe water when moving from vessel which will move in the direction ofthe red arrow Fig. 4. Both rudders being of the same size, at the sameangle to the line of the motion of the vessel, and at the same distancefrom a common axis the effect of the resistance will be thesame on each,and will not tend to alter the position of the rudders; therefore noeifort is required by the steersman to hold them, whereas with thecommon rudder the steersman has to hold it against the water. \Vhen thehelm is hard a port as shown in blue lines in Fig. 4: the outside faceof C, and the inside face of C, act upon the water, the

vessels motion being in the direction of the their surfaces parallel ornearly so with each other in such a manner that the same resistance isoffered to each by the vessels motion through the water and both arebalanced, substantially as herein described.

. i O. F. BROWN.

Witnesses:

SAMUEL RANDALL,

G. W. CARR.

